Fuel-heater for internal-combustion engines.



E. A. VAUGHAN.

FUEL HEATER FOR INTERNAL COMBUSTION ENGiNES.

APPLICATION FILED JUNE 12. I9l7,

Patented Apr. 1, 1919.

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EDG l A... VAlTGHAN, GE SAN ANTONIO, TEXAS.

FUEL-HEATER FOR INTERNAL-COMBUSTION ENGINES.

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Specification of Letters Patent.

Patented Apr. 1, rate.

Application filed June 12, 1917. Serial No. 174,396.

bination of the parts hereinafter fully described and claimed.

The drawing shows a longitudinal sec tion through a heating device inclosing the inlet pipe of the engine and constructed according to this invention.

The inlet pipe 2 for the mixed air and hydrocarbon forming the combustible charge has a, branch or end portion for connecting it to the engine cylinder, and at its other end it has a branch end portion a for "connecting it to a carbureter, or mixing device, or valve of any approved construction. The main portion 2 of inlet pipe is inclosed in a drum or chainberh and the exhaust pipe of the engine cylinder is connected to a branch 6 on the side of this drum. The drum 5 has one end 7 provided with perforations 8, and at its other end has a head 9 secured to it and provided with small perforations 10.

The inlet ipe is secured centrally in openings in t e said end and head, which have suitable flanges or collars 11 on them. A small pipe 12 for Water or' other similar moisture is connected to the inlet branch 4:, and this moisture is mixed with the charge in the pipe 2. The drum is of relatively large size in proportion to the inlet pipe and the pipe branch 6, so that the exhaust is not blown suddenly through it, but remains in contact with the inlet pipe 2 for some time, and escapes gently and quietly through the perforations 8 and 10 in opposite directions, into the atmosphere. When an engine is provided with a heating device of this sort it is found to effect an economy in the use of the gas or hydrocarbon fuel.

What claim is:

The combination, with the inlet pipe for the combustible charge, of a drum encircling the inlet pipe and p 'ovided with ends se cured on the inlet pipe and each having multiplicity of relatively small outlet open-- ings for the exhaust,'said drum having also an inlet for the exhaust on one side and be ing of relatively large area in proportion to the said inlet pipe, whereby the exhaust is not blown suddenly from the inlet through the said outlet openings EDGAR A. VAUGHAN. 

